/*
 * Integrated Rule Inference System (IRIS):
 * An extensible rule inference system for datalog with extensions.
 * 
 * Copyright (C) 2008 Semantic Technology Institute (STI) Innsbruck, 
 * University of Innsbruck, Technikerstrasse 21a, 6020 Innsbruck, Austria.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
 * MA  02110-1301, USA.
 */
package org.deri.iris;

import java.util.HashMap;
import java.util.Map;

/**
 * A utility to allocate a configuration object to the current thread.
 */
public class ConfigurationThreadLocalStorage
{
	/**
	 * Set this thread's configuration object.
	 * @param configuration The knowledge-base configuration object.
	 */
	public static void setConfiguration( Configuration configuration )
	{
		synchronized( mConfigMap )
        {
	        mConfigMap.put( Thread.currentThread(), configuration );
        }
	}
	
	/**
	 * Get this thread's configuration object.
	 * @return The knowledge-base configuration object.
	 */
	public static Configuration getConfiguration()
	{
		synchronized( mConfigMap )
        {
	        return mConfigMap.get( Thread.currentThread() );
        }
	}
	
	/** The thread to configuration map. */
	private static Map<Thread, Configuration> mConfigMap = new HashMap<Thread, Configuration>();
}
